Lung Cancer symptoms
Smoke:
Increased risk of lung cancer and smoking quantity and smoking have occurred at a time, the doctor refers to the risk pack-year smoking history (pack of cigarettes smoked per day multiplied by the number of years smoked). For example, a 10-years of smoking two packs of cigarettes a day have 20 pack-year smoking history. Although the increased risk of lung cancer, or even 10 pack-year smoking history, history of 30 pack years or more is considered to be the largest development of lung cancer risk. In those smoking two or more packs of cigarettes a day, one in seven will die of lung cancer.Pipe and cigar smoking can cause lung cancer risk, although not as high as with smoking. Thus, while smoking a pack of cigarettes every day of human development, is 25 times higher than non-smokers risk of lung cancer, there is a pipe and cigars about five times the risk of lung cancer in non-smokers. Tobacco smoke contains more than 4,000 compounds, many of which proved to be carcinogenic or carcinogenic. The two main tobacco smoke carcinogens, chemicals known nitrosamines and polycyclic aromatic hydrocarbons. Reduce the risk of lung cancer following smoking each year, the growth of normal cells and replace damaged cells in the lung. Former smokers, the risk of lung cancer began to close about 15 years later, non-smokers quit smoking.
Passive smoking:
Passive smoking or sharing living or working quarters, and non-smokers inhale tobacco smoke, smokers develop lung cancer is an established risk factor. Research shows that smokers who do not live with smokers compared with non-smokers living with smokers, increased risk of lung cancer in 24%. An estimated 3,000 lung cancer deaths in the United States, every year due to passive smoking.
Asbestos fibers:
Aluminum silicate asbestos fibers can last a lifetime exposure to asbestos fibers in lung tissue following. Workplace is exposed to asbestos fibers, asbestos in the past widely used as a common source of thermal and acoustic insulation. Today, restrict or prohibit the use of asbestos in many countries, including the United States have lung cancer and mesothelioma (lung cancer, pleural and peritoneal lining, called the peritoneum) and exposure to asbestos. Smoking greatly increases in workers exposed to asbestos develop asbestos-related lung cancer.
Radon
Radon is a naturally occurring, chemically inert gas, which is a natural decay product of uranium. The formation of uranium decay products, including radon, given the type of ionizing radiation. Radon is a known cause of lung cancer, and lung cancer deaths attributed to radon gas, or about 20,000 lung cancer deaths in the United States, an estimated 12% per year, so that radon causes lung cancer in the United States and the second exposure to asbestos, attendant smoking greatly increases the risk of radon exposure to lung cancer. Radon gas can travel through the soil and through the foundation, plumbing, drains, or other openings into the home of the gap.
Air Pollution:
From vehicles, industrial and power plants caused by air pollution, can increase the risk of developing lung cancer in people exposed to the possibility. 1% of lung cancer deaths are due to breathing polluted air, and experts believe that prolonged exposure to highly polluted air can carry a similar second-hand smoke develop lung cancer risk.
What are the signs and symptoms of lung cancer?
In up to 25% of people get lung cancer, cancer is first found in the conventional chest X-ray or CT scan as an isolated small mass, sometimes referred to as a coin lesion, because a two-dimensional X-ray or CT scan , looks like a coin round tumors. These patients have a small, single people often do not report any symptoms of cancer when found.